<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vue.js"></script>
</head>
<body>
    <div id="app">
        这个游戏机是:{{price}},含税价格{{price1}}元,折合人民币{{price2}}元。
        <button @click="btnclick(10800)">含税价格10800</button>
    </div>
    
</body>
<script>
    var vm = new Vue({
        el:"#app",
        data:{
            price:9999,
            price1:0,
            price2:0
        },
        methods: {
            btnclick(newprice){
                this.price += newprice;
            }
        },
        watch:{
            
            price(newval,oldval){
                this.price1 = this.price*1.08;
                this.price2 = Math.round(this.price1/16.75);
            }
        }
    })
        

</script>
</html>